This article is for informational purposes only and should not be considered medical advice. Please consult a qualified healthcare professional for personalized guidance and treatment.

How does a gastric balloon support weight loss?

A gastric balloon supports weight loss by taking up room in the stomach so a person feels fuller sooner and eats smaller amounts. Balloons are usually made of silicone and are introduced either while empty and then filled with saline or placed already filled, depending on the device. The reduction in available stomach volume reduces calorie intake when paired with behavioral changes. Clinical studies show variable weight-loss results because outcomes depend on commitment to diet, physical activity, and follow-up care. The balloon is intended as a temporary aid, not a permanent implant, and is typically accompanied by counseling and medical supervision.

What does the medical procedure involve?

The medical procedure for placing a gastric balloon is minimally invasive and generally done by a gastroenterologist. Placement commonly occurs under light sedation. For fluid‑filled balloons, a deflated balloon is passed into the stomach through the mouth using an endoscope and then filled with saline once correctly positioned. Some newer systems use gas or are swallowable capsules that expand after ingestion. Removal follows a similar endoscopic process after the recommended treatment period, often six months but sometimes longer depending on the device and clinical plan. Patients typically recover quickly but may experience short‑term nausea or discomfort as the body adapts.

Who is a candidate for treatment of obesity?

Candidates for a gastric balloon are usually adults with overweight or obesity who have not achieved sufficient weight loss through diet and exercise alone and who prefer a less invasive option than bariatric surgery. Medical assessment includes BMI, weight‑related health conditions, previous weight‑loss attempts, and readiness to engage in a structured program. The balloon is not suitable for everyone: people with certain stomach conditions, prior gastric surgery, large hiatal hernias, or specific medical contraindications may be ineligible. A comprehensive evaluation by a qualified clinician is required to determine if the procedure aligns with individual health needs and goals.

Benefits and potential risks to the stomach

Potential benefits include moderate short‑term weight loss, improved control of hunger, and opportunity to practice healthier eating habits while supervised. Because it is non‑surgical, the gastric balloon avoids the permanent anatomical changes of some bariatric operations. However, risks and side effects can affect the stomach and overall well‑being: common early effects are nausea, vomiting, abdominal pain, and reflux as the stomach adapts. Less common complications include gastric ulcers, balloon deflation and migration, or obstruction requiring urgent removal. Long‑term data vary by device; outcomes depend on follow‑up care and patient adherence to lifestyle changes.

What to expect after a gastric balloon

After placement, patients typically follow a staged diet that begins with liquids and gradually progresses to solids as tolerance improves. Regular follow-up appointments monitor weight, nutritional status, and any adverse effects. A structured program with dietitians, behavioral support, and exercise guidance increases the chance of sustaining weight loss once the balloon is removed. Expect that weight regained is possible if lifestyle changes are not maintained; the balloon is a tool to assist behavior change rather than an instantaneous cure. If problems arise—severe abdominal pain, persistent vomiting, or signs of obstruction—timely contact with a healthcare provider is essential.

In summary, a gastric balloon is a temporary, minimally invasive medical procedure designed to support weight loss by reducing the functional volume of the stomach and encouraging portion control. It can be a useful option for people with obesity who need an adjunct to diet, exercise, and medical supervision, but it carries specific risks and requires commitment to follow-up care and lifestyle changes. Decisions about this treatment should be made with a qualified medical team after careful evaluation of individual health circumstances.